| Acronym | Meaning |
| AKA | Akan Languages (ISO 639-2 Code) |
| HCT | Higher Colleges Of Technology |
| HEER | High-Explosive Extended Range (ammunition) |
| KAF | Kandahar Air Field |
| AC | Actinium |
| BRA | Brazil (ISO 3166 Trigram) |
| ACK | Acknowledge (telecommunications; Cf. NAK) |
| SDO | Scattered Disc Object |
| NTSB | National Transportation Safety Board |
| BMR | Basal Metabolic Rate ? Bronirovannaya Mashina Razminirovaniya (Russian ????????????? ?????? ?????????????? |